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Keysight Technologies Inc patents


Recent patent applications related to Keysight Technologies Inc. Keysight Technologies Inc is listed as an Agent/Assignee. Note: Keysight Technologies Inc may have other listings under different names/spellings. We're not affiliated with Keysight Technologies Inc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "K" | Keysight Technologies Inc-related inventors


Systems and methods for performing multiple input, multiple output (mimo) over-the-air testing

A multiple-input multiple-output (mimo) over-the-air (ota) test system and method are provided that enable a device under test (dut) to be tested that has no antenna connectors for interfacing antenna elements of the dut with the mimo ota test system. The mimo ota test system and method can include a lens system that allows the ota tests to be performed in a radiating near-field zone, thereby allowing a relatively small and less expensive anechoic chamber to be used in the mimo ota test system.. ... Keysight Technologies Inc

Systems and methods for determining a self-discharge current characteristic of a storage cell

In accordance with one illustrative embodiment, a system for determining a self-discharge current characteristic of a storage cell (or a bank of storage cells) includes a voltage source, first and second voltage measurement circuits, a current measurement circuit, and a processor. The voltage source provides a potentiostat voltage to the storage cell coupled to the system. ... Keysight Technologies Inc

Signal transmission line including electrically thin resistive layer and associated methods

A signal transmission line includes: a first electrical conductor; a second electrical conductor; a dielectric region between the first electrical conductor and the second electrical conductor; and an electrically thin resistive layer disposed within the dielectric region and disposed between the first electrical conductor and the second electrical conductor. A gap exists in the electrically thin resistive layer.. ... Keysight Technologies Inc

Systems and methods for detecting defects in an antenna array and/or in a device coupled to the antenna array

Various illustrative embodiments disclosed herein generally pertain to detecting defects by using a radio-frequency debugging signal transmitted by a transmitting antenna array towards a receiving antenna located in a far-field region of the transmitting antenna array. The radio-frequency debugging signal, which is configured to provide information pertaining to a signal radiation distribution of the transmitting antenna array, is received in the receiving antenna and conveyed to a test unit. ... Keysight Technologies Inc

Cloud-based network tool optimizers for server cloud networks

Network tool optimizers for server cloud networks and related methods are disclosed. In part, master filters are defined to segregate and control user traffic, and user filters are defined to forward the user traffic to cloud-based network tools or tool instances. ... Keysight Technologies Inc

Systems and methods for radio channel emmulation of a multiple input multiple output (mimo) wireless link

Systems and methods for testing a wireless device under test (dut) using over the air (ota) channel emulation are disclosed herein. According to an aspect, a system is disclosed for testing a wireless dut having a dut antenna array. ... Keysight Technologies Inc

Systems and methods for determining a spatial radiation characteristic of a transmitted radio-frequency signal

In an exemplary embodiment, an rf device includes a receiver and an antenna. The antenna is configured to receive a reflected radio-frequency signal containing a set of modulated signal segments. ... Keysight Technologies Inc

Traffic differentiator systems and related methods including automatic packet stream order determination

Traffic differentiator systems for network devices and related methods are disclosed that include automatic port order determination. The disclosed embodiments includes input ports that receive a first stream of packets and a second stream of packets and a packet difference processor that operates in a learning mode and a normal mode. ... Keysight Technologies Inc

Radio-frequency reflector incorporating a reflection apodization element

Various illustrative embodiments disclosed herein generally pertain to an rf reflector incorporating a number of reflection apodization elements, each of which is mounted upon a signal reflecting surface of the rf reflector with an inner edge in substantial contact with an inner portion of the signal reflecting surface and an outer edge elevated above a peripheral portion of the signal reflecting surface. The outer edge is elevated to a height corresponding to a quarter-wavelength of a predefined wavelength. ... Keysight Technologies Inc

Systems and methods to reduce power consumption in data centers

Methods and systems to reduce power consumption in data centers are disclosed. For example, a system includes a network switch configured to communicate high bandwidth communications to one or more servers. ... Keysight Technologies Inc

Differential transmission assembly with common mode suppression

A differential transmission assembly includes two metal prisms, a ground substrate, and a resistive sheet. The two metal prisms are driven differentially. ... Keysight Technologies Inc

Differential transmission line with common mode suppression

A differential transmission line includes a sheath, a first conductive structure, a second conductive structure, and a resistive layer. The first conductive structure is disposed along the differential transmission line and within the sheath, and contributes to formation of a three-dimensional electromagnetic field. ... Keysight Technologies Inc

Methods for calibrating microwave imaging systems

Calibration methods for microwave imaging (mi) systems are disclosed. According to an aspect, an mi system has a plurality of vector network analyzer (vna) ports operatively connected to a plurality of antennas. ... Keysight Technologies Inc

Compact system for characterizing a device under test (dut) having integrated antenna array

A system is provided for characterizing a device under test (dut) including an integrated antenna array. The system includes an optical subsystem having first and second focal planes, where the integrated antenna array is positioned substantially on the first focal plane of the optical subsystem. ... Keysight Technologies Inc

01/04/18 / #20180003876

Systems for passive optical correction of polarization leakages

Passive optical systems and methods for improving polarization of an optical reference beam are disclosed. For example, an optical system includes first and second quarter wavelength plates (qwps) positioned in a beam path of the optical system. ... Keysight Technologies Inc

01/04/18 / #20180003480

Homodyne optical sensor system incorporating a multi-phase beam combining system

Generally, in accordance with the various illustrative embodiments disclosed herein, a homodyne optical interferometer can include a multi-phase beam combining system that receives a composite beam from an optical beam guidance system and uses a diffraction grating to produce a diffracted plurality of light beam members. Each of the diffracted plurality of light beam members is propagated through a birefringent optical element that imposes a differential phase shift on each member based on polarization and differing optical path lengths. ... Keysight Technologies Inc

12/28/17 / #20170373773

Systems and methods for calibrating out the radiation channel matrix in a multiple input, multiple output (mimo) over-the-air (ota) radiated test system

A mimo test system is provided that performs non-cable-conducted, over-the-air radiated calibration and test modes of operations. A dut is located in an anechoic chamber having a plurality of probe antennas disposed therein. ... Keysight Technologies Inc

12/14/17 / #20170359042

Variable gain distributed amplifier systems and methods

Distributed amplifier systems and methods are disclosed. An example distributed amplifier system includes first stage traveling wave amplifier (twa) circuitry that is controllable to provide one of a first set of discrete gain settings. ... Keysight Technologies Inc

12/14/17 / #20170357393

Layout system for devices with variable display screen sizes and orientations

A method for operating a data processing system having a display screen on which a gui is displayed is disclosed. The gui has a plurality of configurations having different aspect ratios or numbers of pixels. ... Keysight Technologies Inc

09/07/17 / #20170254835

Measurement system having a digital edge trigger detection circuit that is capable of operating at the full signal bandwidth of the measurement system

A measurement system is provided that has a digital edge trigger circuit that is capable of operating at the full signal bandwidth of the measurement system. The digital edge trigger circuit comprises a plurality of processors that process time-interleaved digital data samples output from respective time-interleaved adcs to perform edge trigger detection. ... Keysight Technologies Inc

08/31/17 / #20170250453

Coaxial transmission line including electrically thin resistive layer and associated methods

A coaxial transmission line, e.g. A coaxial cable, includes an inner electrical conductor, an outer electrical conductor, a dielectric region between the inner electrical conductor and the outer electrical conductor, and an electrically thin resistive layer within the dielectric region and concentric with the inner electrical conductor and the outer electrical conductor. ... Keysight Technologies Inc

08/31/17 / #20170250123

Method and apparatus for cooling integrated circuits

An apparatus having first, second, and third chambers and a plurality of receiving channels is disclosed. The first chamber includes a device surface to be cooled. ... Keysight Technologies Inc

08/31/17 / #20170248634

Measurement system that stores pre- and post-qualification signal data

A measurement system is provided that performs a qualified store algorithm. When performing the algorithm, the measurement system stores in memory digital data samples acquired during a time window while a qualification signal is valid, a preselected number of digital data samples acquired prior to and adjacent in time to the time window, and a preselected number of digital data samples acquired subsequent to and adjacent in time to the time window.. ... Keysight Technologies Inc

08/31/17 / #20170248633

Measurement system that stores samples acquired during a time window that includes a trigger event and during a subsequent user-specified time window

A measurement system is provided that performs a trigger data acquisition algorithm. When the measurement system performs the trigger event data acquisition algorithm, it causes a preselected number of digital data samples acquired during a first time window that includes a trigger event and during a second time window that is specified by the user and that is subsequent in time to the first time window to be stored in memory. ... Keysight Technologies Inc

08/03/17 / #20170223830

Three-dimensional interconnect structure adapted for high frequency rf circuits

A three-dimensional interconnect structure having a top surface, a first coaxial conductor, and a shielded chamber is disclosed. The first coaxial conductor is filled with a solid dielectric medium. ... Keysight Technologies Inc

08/03/17 / #20170223559

Systems and methods for test and calibration of mimo antenna arrays including a digital interface

A testing system includes a test chamber including an array of spaced-apart probe antennas and a positioner configured to support a device under test (dut) having an array of digital antenna elements, a radio frequency (rf) signal generator and analyzer configured to send and receive rf test signals to/from the spaced-apart probe antennas, and an rf switch component configured to selectively couple the rf signal generator and analyzer to the array of spaced-apart probe antennas within the test chamber. A digital test instrument includes at least one digital signal generator and analyzer configured to generate digital test signals to the digital antenna elements of the dut in a transmitter test mode, and to analyze received digital test signals from the digital antenna elements of the dut in a receiver test mode, a programmable hardware device configured to implement a custom digital fiber interface protocol for the generated and received digital test signals, and a digital fiber interface configured to couple the programmable hardware device to the array of digital antenna elements of the dut and transceive the digital test signals to/from the array of digital antenna elements of the dut. ... Keysight Technologies Inc

08/03/17 / #20170219334

Separated beams displacement measurement with a grating

An interferometer has a first input configured to provide a first measurement beam at a first frequency, and a second measurement signal at the first frequency. The interferometer has a second input configured to provide a reference beam at a second frequency that is different than the first frequency; an optical element comprising a first portion comprising a polarization beam splitter; and a diffraction grating disposed over the optical element configured to diffract the first measurement beam and the second measurement beam. ... Keysight Technologies Inc

06/29/17 / #20170187475

Method and apparatus for spectral stitching discontinuous spectra using reference channel, pilot tones and comb signal

A system and method sequentially measure the amplitude and phase of a signal in each of two or more noncontiguous spectrum segments (e.g., harmonics) which each include two or more portions which together span the spectrum segment, using a local oscillator (lo) signal whose frequency and phase change for each measurement. The measured phase of the signal for at least one of the portions in each spectrum segment is adjusted to account for the change of phase in the lo signal from measurement of one portion to another, using phases of one or more pilot tones measured in each portion. ... Keysight Technologies Inc

06/22/17 / #20170180175

System and apparatus and associated methods for multiple channel signal generating and analyzing with wide bandwidth

The multi-channel signal processing device includes a multi-channel continuous waveform (cw) phase shifter module configured to generate phase control and filter interference therein for multiple local oscillator (lo) signals at a same frequency, a multi-channel up-converter module configured to up-convert the multiple lo signals to a desired frequency and filter respective image signals therein, and a multi-channel wideband mixer module configured to receive and mix the up-converted lo signals at the desired frequency from the multi-channel up-converter module with radio frequency (rf) signals.. . ... Keysight Technologies Inc

06/15/17 / #20170168094

Current sensing circuit

A current sensing circuit for sensing current in a dut includes first and second input terminals; a shunt resistor connected to the first input terminal; a shunt resistor sensing circuit that amplifies voltage between terminals of the shunt resistor; a low pass filter coupled to an output of the shunt resistor sensing circuit; a current transformer having a primary winding connected between a terminal of the shunt resistor and the second input terminal; a current transformer sensing circuit connected to a secondary winding of the current transformer and configured to amplify current from the secondary winding; and an adder configured to add outputs of the low pass filter and the first current transformer sensing circuit. The current transformer sensing circuit includes a first transimpedance amplifier and a first input resistor. ... Keysight Technologies Inc

06/01/17 / #20170153280

Apparatus and method for cable phase correction for vector analyzer remote heads

A system and method corrects the phase of measurement signals obtained from remote heads during testing of a device. A first signal is transmitted along first and second transmission lines to respective remote heads. ... Keysight Technologies Inc

05/04/17 / #20170123394

System and method for programmable control instruments, test and measurement hardware configuration

A system of hardware configuration of a programmable control instrument, test and measure that includes an integrated fpga is disclosed. The fpga includes a static section comprising at least one static logic fpga preset; a dynamic section comprising at least one dynamic logic fpga programmable by a user; and a logical interface that connects the static section and dynamic section.. ... Keysight Technologies Inc

05/04/17 / #20170123036

Non-contact type current sensor and associated methods

A current measurement device is provided for use with a measurement target having a conductive path. The current measurement device includes a non-contact current sensor to be positioned adjacent the conductive path of the measurement target. ... Keysight Technologies Inc

04/20/17 / #20170111127

Hybrid multimode network analyzer

Network analysis employs a band-limited multi-tone test signal having a tunable center frequency to test a device under test (dut). A hybrid network analyzer includes a test signal source to provide the band-limited multi-tone test signal, and a local oscillator (lo) source to provide a tunable lo signal configured to track the tunable center frequency of the band-limited multi-tone test signal. ... Keysight Technologies Inc

03/30/17 / #20170093509

Over-the-air test

A system for emulating an over-the-air channel for communicating with a device under test is provided. The system comprises an anechoic chamber having na primary probes and nb secondary probes where na>nb. ... Keysight Technologies Inc

03/09/17 / #20170067949

Method and system for calibrating phases of comb teeth in comb signal with pilot tone and using calibrated comb teeth phases to measure a device under test

A system and method sequentially measure phases of selected comb teeth of a comb signal using a local oscillator (lo) signal whose frequency and phase are changed for each sequential measurement, and adjust the measured phases to account for the change of phase in the lo signal from measurement of one selected comb tooth to the next to ascertain reference phase differences between the selected comb teeth. The measured phases of the selected comb teeth are adjusted by applying a phase offset determined from a first phase and a second phase of a pilot tone which are measured using the lo signal, respectively, before and after the frequency and phase of the lo signal change from measurement of one comb tooth to the next. ... Keysight Technologies Inc

03/02/17 / #20170062073

Method and system for analyzing a refresh rate of a volatile memory device

A system and method are provided for a analyzing a refresh rate of a device under test (dut) such as a volatile memory device that includes a memory and an associated memory controller. The method includes acquiring refresh data based upon signals between the memory and the memory controller of the volatile memory device over a time period, determining the refresh rate of the volatile memory device for time windows of the time period based upon the acquired refresh data, and displaying the refresh rate of the volatile memory device, compared to a refresh threshold, on a graphical user interface (gui), for each of the time windows over the time period.. ... Keysight Technologies Inc

03/02/17 / #20170061045

Method and system for modeling an electronic device under test (dut) using a kernel method

A method provides modeling a dut and generating a simulated response. The method includes receiving a first portion of a stimulus signal generated by a signal generator, a second portion of the stimulus signal being input to the dut; receiving a response signal output by the dut in response to a second portion of the stimulus signal; digitizing the received first portion and the received response signal; correcting the digitized signals; measuring training input series data of the digitized first portion of the stimulus signal and training output series data of the digitized response signal; and utilizing kernel adaptive filtering for extracting a device model from the training input and output series data, and for generating simulated responses of the dut to subsequent stimulus inputs, respectively. ... Keysight Technologies Inc

03/02/17 / #20170060114

Finite state machine-based trigger event detection employing interpolation

Trigger event detection employs a finite state machine (fsm) and interpolation of time-sampled data. A trigger event detector includes an interpolator configured to interpolate time-sampled data and to provide an interpolated sequence of data. ... Keysight Technologies Inc

02/23/17 / #20170054427

Adaptive matching network

An apparatus for acquiring a desired response to an electromagnetic signal includes an adaptive network that receives a feedback signal and dynamically adjusts an electrical characteristic of the adaptive network in response to the feedback signal, the adaptive network electrically cooperating with an electrical component. A measurement device measures a parameter indicative of a combined response by the electrical component and the adaptive network to an impinging electromagnetic signal. ... Keysight Technologies Inc

02/16/17 / #20170048006

Method and apparatus for spectral stitching using reference channel and a pilot tone

A system and method sequentially measure the amplitude and phase of an output signal of a device under test in each of two or more frequency ranges which together span the output signal spectrum, using a local oscillator (lo) signal whose frequency changes for each measurement. The measured phase of the output signal is adjusted for at least one of the frequency ranges to account for a change of phase in the lo signal from measurement of one frequency range to another frequency range, including applying to the measured phase a phase offset determined by measuring the phase of a pilot tone using the lo signal before and after the frequency of the lo signal changes from measurement of one frequency range to another. ... Keysight Technologies Inc

02/16/17 / #20170047915

Method and apparatus for spectral stitching using reference channel and pilot tones

A system and method sequentially measure the amplitude and phase of an output signal of a device under test in each of two or more frequency ranges which together span the output signal spectrum, using a local oscillator (lo) signal whose frequency and phase change for each measurement. The measured phase of the output signal is adjusted for at least one of the frequency ranges to account for the change of phase in the lo signal from measurement of one frequency range to another frequency range, including applying to the measured phase a phase offset determined by measuring the phases of two pilot tones in the two or more frequency ranges, using the lo signal. ... Keysight Technologies Inc

02/16/17 / #20170047633

Signal transmission line and electrical connector including electrically thin resistive layer and associated methods

A signal transmission line or an electrical connector includes an inner electrical conductor, an outer electrical conductor, a dielectric region between the inner electrical conductor and the outer electrical conductor, and an electrically thin resistive layer within the dielectric region and concentric with the inner electrical conductor and the outer electrical conductor. The electrically thin resistive layer is a resistive layer configured to be transparent to a substantially transverse-electromagnetic (tem) mode of transmission, while absorbing higher order modes of transmission.. ... Keysight Technologies Inc

02/16/17 / #20170047632

Coaxial transmission line including electrically thin resistive layer and associated methods

A coaxial transmission line, e.g. A coaxial cable, includes an inner electrical conductor, an outer electrical conductor, a dielectric region between the inner electrical conductor and the outer electrical conductor, and an electrically thin resistive layer within the dielectric region and concentric with the inner electrical conductor and the outer electrical conductor. ... Keysight Technologies Inc

02/09/17 / #20170039125

System of implementing deterministic real-time, distributed and synchronized for control applications, test and measurement

System deterministic execution time, distributed and synchronized control applications, test and measurement. System synchronized distributed deterministic execution time for modules (m0, . ... Keysight Technologies Inc

02/02/17 / #20170031336

Multi-channel digital trigger with combined feature matching and associated methods

A method of operating a measurement instrument, such as a digital oscilloscope, includes receiving multiple analog input signals from a measurement target over respective channels, converting the analog input signal on each channel into a respective digital signal, and comparing signal values of the digital signal on each channel to at least one threshold to generate a stream of levels for each channel. The method includes combining the stream of levels for each channel into a combined stream of levels that reflects combined features of the multiple analog input signals, detecting a pattern in the combined stream of levels using a combined-feature matching procedure implemented by hardware, such as a finite state machine (fsm), and triggering the measurement instrument according to a result of the combined-feature matching procedure.. ... Keysight Technologies Inc

01/19/17 / #20170019170

Dual-directional electro-optic probe

A probe includes a main electro-optical modulator (130), first (150) and second (160) optical couplers each having a respective input (152, 162), through (154, 164) and isolated (156, 166) port, and reference (170) and test (174) optical detectors. Reference light and test light, respectively, are received at the inputs (152, 162) of the optical couplers (150, 160). ... Keysight Technologies Inc

01/12/17 / #20170012807

Method and apparatus for extraction of baseband waveform from amplitude modulated signal via time domain sampling

A measurement apparatus, for example a digital oscilloscope, receives an amplitude modulated (am) signal comprising a baseband signal, having a baseband waveform, modulating a carrier signal, and reconstructs the baseband waveform. The measurement apparatus: samples the am signal at a sampling rate which produces a plurality of data samples for each period of the carrier signal; determines the amplitude of the baseband signal for each of a plurality of periods of the carrier signal from at least some of the plurality of data samples for each period; and reconstructs the baseband waveform from the amplitudes of the baseband signal for each of the plurality of periods of the carrier signal. ... Keysight Technologies Inc








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